package com.ruoyi.framework.security.filter;

import java.io.IOException;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.ruoyi.common.core.domain.model.H5LoginUser;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;
import com.ruoyi.common.core.domain.model.LoginUser;
import com.ruoyi.common.utils.SecurityUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.framework.web.service.TokenService;

import static com.ruoyi.common.constant.Constants.USER_TYPE_ADMIN;
import static com.ruoyi.common.constant.Constants.USER_TYPE_H5;

/**
 * token过滤器 验证token有效性
 *
 * @author ruoyi
 */
@Component
public class JwtAuthenticationTokenFilter extends OncePerRequestFilter {
    @Autowired
    private TokenService tokenService;

    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain)
            throws ServletException, IOException {
        String token = tokenService.getToken(request);
        if (StringUtils.isNotEmpty(token)) {
            String userType = null;
            try {
                userType = tokenService.getUserTypeFromToken(token);
            } catch (Exception ignored) {
            }

            if (StringUtils.isNotEmpty(userType)) {
                // 根据 token 中的用户类型决定注入何种主体，避免依赖路径前缀
                if (USER_TYPE_H5.equals(userType)) {
                    H5LoginUser h5LoginUser = tokenService.getH5LoginUser(request);
                    if (StringUtils.isNotNull(h5LoginUser) && StringUtils.isNull(SecurityUtils.getAuthentication())) {
                        tokenService.verifyToken(h5LoginUser);
                        UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(h5LoginUser, null, h5LoginUser.getAuthorities());
                        authenticationToken.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
                        SecurityContextHolder.getContext().setAuthentication(authenticationToken);
                    }
                } else if (USER_TYPE_ADMIN.equals(userType)) {
                    LoginUser loginUser = tokenService.getLoginUser(request);
                    if (StringUtils.isNotNull(loginUser) && StringUtils.isNull(SecurityUtils.getAuthentication())) {
                        tokenService.verifyToken(loginUser);
                        UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(loginUser, null, loginUser.getAuthorities());
                        authenticationToken.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
                        SecurityContextHolder.getContext().setAuthentication(authenticationToken);
                    }
                }
            }
        }

        chain.doFilter(request, response);
    }
}
